Question

Case study



A ball is thrown upward from a rooftop, 80m above the ground. It will reach maximum

vertical height and then fall back to the ground. The height of the ball from the ground at time t is h

and is given by h = -16t2 + 64t + 80, then give the answer of the following questions.

i- The height reached by the ball after 1 second is :

(a) 128m (b) 208m (c) 98m (d) None of these

ii- The time it will take before hitting the ground is

(a) 6 sec (b) 1sec (c) 5sec (d) None of these

iii- The maximum height reached by the ball is:

(a) 240m (b) 144m (c) 200m (d)None of these

iv- If we draw the graph of the given equation then the shape of the graph will be:

(a) A straight line (b) A closed polygon (c) parabola (d) None of these

v- The value of discriminant for the given equations is

(a) 9216 (b)8216 (c)6129 (d) None of these​

Answer 1

Answer:

hi user ID

I know this is a question but I couldn't understand because

I know there are space and I can understand but it's the large question you may

do the have question and half question after so it would be easy to right answer

not only you I am just saying to everyone so don't write large question because it would be hard to see that and right answer so it would be some time mixed up and can't understand anything so sometimes what happened I report the long answer don't do it next time last warning